Upgrade build system to PEP 517

[SelfRef]

Hi,

I'm the maintainer of python-exscript and python-exscript-git AUR scripts which build packages of this Python library. According to Makefile this library still uses the old deprecated setup method. It would be great if you would consider upgrading the build system to standard PEP 517 because the current build is warning about deprecation:

SetuptoolsDeprecationWarning: setup.py install is deprecated.
!!

        ********************************************************************************
        Please avoid running ``setup.py`` directly.
        Instead, use pypa/build, pypa/installer or other
        standards-based tools.

        See https://blog.ganssle.io/articles/2021/10/setup-py-deprecated.html for details.
        ********************************************************************************

!!

Thanks in advance.